This is what I do and I'm not recommending it for anyone else. I am so cheap and it's my pond, in the middle of my farm, and vermed so no water gets out even on my fields. I use a Walmart 51% glyphosate ($9) 4 oz to one gal. of water. One bottle makes about 2 1/2 gal. at 4 oz. and 10 gal. at one oz. So why do I use 4 oz to a gal. If I use a small bottle of dishwashing surfactant ($5) at 3 oz of glyphosate to a gal I gain only 3/4 of a gal for my extra $5, and since I haven�t tested that ratio I don't know if it would work for me. This product isn't for use with water. But three times now I have sprayed in a selected area teaming with frogs and hundreds of minnows around my deck where I am constantly observing wild life and I have never seen any detriment to frogs or minnows. In these kind of decussions before I have been told that the kind of surfactant used is what makes a glyphosate product safe for water, not the glyphosate itself. So If that is the case then 4oz per gal of glyphosate without surfactant is safe. Regardless of whether this is true or not I have not lost any frogs or minnow that were in ground 0 of the spray.
